Let's be careful to separate capable-of from motivated-to.

Those three "can't even monitor" situations can be traced to blocs with both (A) a financial profit if they succeed and (B) some non-clandestine political clout to sabotage/discontinue things.

What are you talking about? There have been 5 (five) cases of screwworm in the us and the us is responding by producing millions of sterile male screwworms a day as we speak.